Process for welding nickel-based superalloys

Details Process for welding nickel-based superalloys Process for welding nickel-based superalloys

1987-06-01

1989-02-14

Albritton, C. L.

Electric heating

Metal heating

By arc

2191218, 21912184, 427 531, 427432, B23K 2600

Patent

active

048048151

ABSTRACT:
A process for preventing crack formation in nickel alloy substrates having a gamma-prime phase includes providing a substrate comprised of a nickel alloy having a gamma-prime phase. A portion of the substrate is irradiated with a laser beam and thereby forms a molten pool of the alloy. A supply of coating particles are dispersed within the pool, the particles are comprised of a nickel alloy having gamma-prime forming constitutents. Rapid relative motion between the beam and the pool is effected so that the pool rapidly solidifies and thereby minimizes the formation of gamma-prime therein and adjacent thereto.

REFERENCES:
patent: 4117302 (1978-09-01), Earle et al.
patent: 4269868 (1981-05-01), Livsey
patent: 4299860 (1981-11-01), Schaefer et al.
patent: 4300474 (1981-11-01), Livsey
patent: 4323756 (1982-04-01), Brown et al.
patent: 4533815 (1985-08-01), Ecer
patent: 4615903 (1986-10-01), Miller
patent: 4730093 (1988-03-01), Mehte et al.

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